/*
 * Copyright 2010 David de Mingo
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */

package org.shalma.internal;

import org.aspectj.lang.reflect.MethodSignature;
import org.shalma.Service;
import org.shalma.ServiceManager;

// TODO move code to ServiceManager
public aspect ServiceManagerAspect {

	public pointcut getService(): execution(Service+ *.*()) && !within(ServiceManager);

	declare error
		: call(Service+ *.*()) && withincode(Service+.new())
		: "You can not get a Service inside a Service constructor" ;

	@SuppressWarnings("unchecked")
	Object around(): getService()
    {
		final Class<?> returnType = ((MethodSignature) thisJoinPointStaticPart
				.getSignature()).getReturnType();
		try {
			return ServiceManager.getInstance().getService(
					(Class<Service>) returnType);
		} catch (Exception e) {
			throw new RuntimeException(e);
		}
	}
}
